CN112569489A

CN112569489A - Gear damping body slowly falls device

Info

Publication number: CN112569489A
Application number: CN202011532222.XA
Authority: CN
Inventors: 李国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-03-30

Abstract

The utility model provides a gear damping body slowly falls device, is applicable to fields such as fire control, building installation, rock climbing and physical training, and it includes that organism, swiveling wheel, gear damping body, center pin, rolling disc, end cover and slowly fall the rope subassembly and constitute. The slow descending rope surrounds the rotating wheel, one end of the slow descending rope is connected with a person needing slow descending, the rotating wheel is driven to rotate when the person descends, the rotating wheel drives the rotating disc and the gear damping body to rotate, a gear of the gear damping body acts on an inner gear ring of the machine body, reaction force of the inner gear ring generates reverse torque of the rotating wheel, the reverse torque balances the dead weight of the person to generate torque of the rotating wheel, and uniform-speed slow descending of the person is achieved.

Description

Gear damping body slowly falls device

The technical field is as follows:

the invention relates to a slow descending device used when descending from a high place, which is suitable for the fields of fire escape, protection of high-altitude operation, rock climbing, physical training and the like.

Background

The existing high-rise escape descent control device generally adopts a centrifugal friction damping body mechanism to control the descent speed of escape personnel, the mechanism is complex in structure, the damping efficiency of a centrifugal friction block is low, a gear speed change mechanism needs to be arranged, and the centrifugal friction block generates heat due to friction to cause the failure of the descent control device, so that the casualties of the escape personnel are caused.

Chinese patent CN203989528U discloses a positive pressure descent control device, which mainly comprises a descent control device casing, a rotating wheel, a central shaft, a cylinder, an end cover, a descent control rope assembly and a bolt. The rotating wheel provided with the cylinder is installed in the round hole of the descent control device shell, the round hole of the descent control device shell is provided with a plurality of arc grooves, the descent control rope drives the rotating wheel to rotate, the cylinder impacts the arc grooves, and the rotating wheel obtains reverse torque opposite to the rotating direction of the rotating wheel, so that escape personnel can achieve the purpose of speed limiting and descent control. The damping body of the descent control device with the structure is a cylinder, the cylinder is required to completely exit from the previous arc groove and then enter the next arc groove after colliding with the previous arc groove, and the cylinder and the arc groove are completely separated from each other at the front half section of entering the arc groove, so that the cylinder collides with the arc groove damping body to do work, and the intermittent descent control device is unstable in work, large in vibration and large in noise.

The technical problems to be solved by the invention are as follows: aiming at the defects of the prior art, the slow descending protection device with simple structure, safety, stability and high working efficiency is provided.

The technical scheme adopted by the invention is as follows: a gear damping body slow descending device comprises a machine body, a rotating wheel, a gear damping body, a central shaft, a rotating disc, an end cover and a slow descending rope assembly, wherein the slow descending rope assembly comprises a slow descending rope and a rope clamping assembly, the slow descending rope is led out from a rope outlet of the machine body through the rope clamping assembly around a rope groove of the rotating wheel, one end of the slow descending rope is connected with a person or an object needing slow descending, one end of the rotating wheel is fixedly connected with the rotating disc, a plurality of grooves are uniformly formed in the circumference of the rotating disc, gear damping bodies are arranged in the grooves and can slide in the grooves, the middle of each gear damping body is cylindrical, gears are arranged at two ends of each gear damping body, tooth profiles of the two ends of each gear are the same, the root circle diameters of the gears at the two ends are larger than the diameter of the middle; the end covers comprise a front end cover and a rear end cover which are respectively arranged on the front end surface and the rear end surface of the machine body, and the central shaft is arranged in the rotating wheel and is connected with the front end cover and the rear end cover by nuts; the rotating wheel is arranged in a round hole of the machine body and can rotate around the central shaft, and the round hole of the machine body is of an inner gear ring structure.

Furthermore, the tooth profiles of the two ends of the gear damping body are one of circular arcs and trapezoids, or the two ends of the gear damping body are regular polygons.

Further, the machine body is provided with a hanging ring.

Therefore, the slow descending device is fixed at a high place, a slow descending person or object descends to drive the slow descending rope through self weight, the slow descending rope drives the rotating disc to rotate, the rotating disc drives the gear damping body to revolve around the central shaft as the circle center, meanwhile, the gear damping body rotates under the action of the inner gear ring of the machine body, the revolution of the gear damping body generates a centrifugal force N, the gear damping body and the gear ring of the machine body interact, the gear ring of the machine body extrudes, collides and rubs the gear damping body to form a damping force P, and the damping force P is increased along with the increase of the centrifugal force N. The centrifugal force N of the gear damping body is proportional to the square of the moving speed of the gear damping body. The damping force P generates a reverse torque to the rotary wheel. The descending speed of the slowly descending person or object is increased, the reverse torque is increased at the same time, and when the reverse torque is equal to the torque generated by the slowly descending person or object, the descending speed of the descending person or object is not accelerated any more, so that the purpose of constant-speed slow descending is achieved. When the gear damping body acts with the gear ring of the machine body, when the teeth which do work on the gear damping body do not exit the gear ring tooth groove of the machine body, the gear damping body continuously and stably does work because the front tooth of the gear damping body rotates and is screwed into the front tooth groove of the gear ring of the machine body.

Drawings

FIG. 1 is a first structural diagram of the present invention

FIG. 2 is a diagram of the structure of the second embodiment of the present invention

FIG. 3 is a view showing the structure of a rotary disk according to an embodiment of the present invention

FIG. 4 is a diagram of a gear damper structure according to an embodiment of the present invention

FIG. 5 is a diagram of a gear damper structure of the embodiment of the present invention

FIG. 6 is a structural diagram of a gear damper according to an embodiment of the present invention

FIG. 7 is a diagram of the structure of a gear damper according to an embodiment of the present invention

Detailed Description

Referring to the attached figures 1, 2, 3, 4 and 5, a gear damping body slow descending device comprises a machine body 1, a rotating wheel 2, a gear damping body 3, a central shaft 4, a rotating disc 5, an end cover 6 and a slow descending rope assembly 7, wherein the slow descending rope assembly comprises a slow descending rope 71 and a rope clamping assembly 72, the slow descending rope 71 surrounds a rope groove 21 of the rotating wheel 2 and is led out from a rope outlet 11 of the machine body 1 through the rope clamping assembly 72, one end of the slow descending rope 71 is connected with a person or an object needing slow descending, one end of the rotating wheel 2 is fixedly connected with the rotating disc 5, 6 grooves 51 are uniformly arranged on the circumference of the rotating disc 5, the gear damping body 3 is arranged in each groove 51, the gear damping body 3 can slide in each groove 51, the middle of the gear damping body 3 is cylindrical, two ends of the gear damping body are arc-shaped teeth, the tooth shapes of the two ends are the same, the diameter of the root of the teeth of the two ends, the end cover 6 comprises a front end cover 61 and a rear end cover 62 which are respectively arranged on the front end surface and the rear end surface of the machine body 1, the central shaft 4 is arranged in the rotating wheel 2 and is connected with the front end cover 61 and the rear end cover 62 through a nut 41, the rotating wheel 2 is arranged in the circular hole 12 of the machine body 1 and can rotate around the central shaft 4, the circular hole 12 of the machine body 1 is of an inner gear ring structure, and the machine body 1 is provided with a hanging ring 13.

Fig. 6 is a tooth-shaped trapezoidal structure at both ends of the gear damping body 3, and fig. 7 is a regular polygonal structure at both ends of the gear damping body 3.

Claims

1. The utility model provides a gear damping body slowly falls device, includes organism (1), swiveling wheel (2), gear damping body (3), center pin (4), rolling disc (5), end cover (6) and slowly falls rope assembly (7) and constitutes its characterized in that: the slow descending rope assembly comprises a slow descending rope (71) and a rope clamping assembly (72), wherein the slow descending rope (71) surrounds a rope groove (21) of a rotating wheel (2) and is led out from a rope outlet (11) of a machine body (1) through the rope clamping assembly (72), one end of the slow descending rope (71) is connected with a person or an object needing slow descending, one end of the rotating wheel (2) is fixedly connected with a rotating disc (5), a plurality of grooves (51) are uniformly formed in the circumference of the rotating disc (5), a gear damping body (3) is arranged in each groove (51), the gear damping body (3) can slide in each groove (51), gears are arranged at two cylindrical ends in the middle of the gear damping body (3), tooth profiles of the two ends are the same, the root circle diameters of teeth of the two ends are larger than the diameter of the middle cylinder, the middle cylinder is arranged in each groove (51), an end cover (6) comprises a front end cover (61) and a rear end cover (62) which are respectively, the central shaft (4) is arranged in the rotating wheel (2) and is connected with the front end cover (61) and the rear end cover (62) through nuts (41), the rotating wheel (2) is arranged in a round hole (12) of the machine body (1) and can rotate around the central shaft (4), and the round hole (12) of the machine body (1) is of an inner gear ring structure.

2. The gear damping body descent control device of claim 1, wherein: the tooth shapes of two ends of the gear damping body (3) are arc-shaped or trapezoidal, or two end faces of the gear damping body (3) are regular polygons.

3. The gear damping body descent control device of claim 1, wherein: the machine body (1) is provided with a hanging ring (13).